Paul,
Using RMI from NetD is no different than using RMI from a normal Java
application.
Your code:
DocumentManager mgr = DocumentManager.getInstance();
Document doc = mgr.fetchDocument(docIDString);
CSpDisplayField f = (CSpDisplayField) event.getSource();
f.setHtmlText(doc.getTitle());
could easily be accessing a RMI object of type Document that is returned
from your singleton DocumentManager object (which may or may not be [your
choice] an RMI object).
If you want to explore RMI, I suggest you simply read the RMI example
document that comes with the JDK (both 1.1.x and 1.2.x).
[EMAIL PROTECTED]
Team NetDynamics
> -----Original Message-----
> From: Paul Huard [SMTP:[EMAIL PROTECTED]]
> Sent: Wednesday, May 19, 1999 3:52 PM
> To: Hill, Les
> Cc: [EMAIL PROTECTED]; 'ND4 Group'
> Subject: Re: [ND] coordinating across CPs
>
> "Hill, Les" wrote:
>
> > Paul,
> >
> > It is not clear what you are trying to do with your cache.
>
> The application is a document management system with the twist that the
> Document object has become very logic-intensive due to customer
> requirements.
> Thus, using data objects became virtually impossible. As a result I
> created a
> Document object cache based on the "cache management pattern" illustrated
> in
> Mark Grand's Java Patterns book. The pattern uses a Singleton Manager, a
> Fetcher, and a Cache object.
>
> A quick example of how it is used in our NetD code is:
>
> public int stTitle_onBeforeHtmlOutputEvent(CSpHtmlOutputEvent event)
> {
> DocumentManager mgr = DocumentManager.getInstance();
> Document doc = mgr.fetchDocument(docIDString);
> CSpDisplayField f = (CSpDisplayField) event.getSource();
> f.setHtmlText(doc.getTitle());
> return (PROCEED);
> }
>
>
> > But if cache
> > consistency across JVMs is important, then I can think of at least two
> > simple options:
> >
> > Use a global session object -- this would work well for relatively small
> > caches.
> >
>
> Another poster recommended that I do that and it seems easiest and most
> cost-effective for the client. I believe I can make my Cache object into a
> CSpValue/Global object relatively quickly, but I have yet to do it.
>
> >
> > Use RMI and run a long-lived service that acts as a global cache for all
> > CPs. (This can be very easy or very complex depending on what your
> cache
> > needs to do -- RMI itself is almost a no-brainer).
> >
>
> That sounds interesting. If anyone has examples of how to do it in
> NetDynamics,
> I'd love to see them.
>
> Thanks for your help,
> Paul
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